Effective removal of heavy metals from aqueous solution using CS/OMMT nanocomposite synthesized by gamma irradiation

Abstract

The current investigation involved the fabrication of nanocomposites CS/OMMT through polymerization initiated by γ-rays irradiation. The product was characterized using FTIR and SEM techniques. The current analysis aimed to determine the adsorption performance of lead (II) ions onto nanocomposites that were synthesized, using a batch adsorption technique in an aqueous medium. The investigation analyzed the influence of different issues on the adsorption capability of the nanocomposite. Further, the lead (II) concentration, medium pH, contact time & adsorbent use were taken into account. Adsorption process order was determined with the help of kinetics. Kinetics data of pseudo 1st and 2nd order models were analyzed. There was a strong correlation between the data and the second-order kinetic model. Based on our research, we conclude that the nanocomposite showed good agreement with the Langmuir model of Pb(II) ions. The nanocomposite underwent a desorption procedure utilizing solutions of CaCl2, NaCl and 0.01 M HNO3 to attain complete elimination of Pb(II) ions. This process are revealed that CS/OMMT demonstrated remarkable efficacy as an absorbent for heavy metal ions, suggesting its potential as a viable method for purifying heavy metal-contaminated water.

Keywords

• Nanocomposite
• Heavy metal
• Adsorption isotherm
• Adsorption kinetics